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author | Shawn Guo <shawn.guo@freescale.com> | 2014-08-26 15:06:33 +0800 |
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committer | Shawn Guo <shawn.guo@freescale.com> | 2014-09-16 10:06:48 +0800 |
commit | 19d863446a6b75b2f97b3012acf67c40b9f2ea1f (patch) | |
tree | 2e5c01c62795c0e0a2d33ba5f2f2bb0f00a2b43d /arch/arm/mach-imx/clk.h | |
parent | bd404b1d337b960c44b75fcb01e3170f1d41ae80 (diff) | |
download | op-kernel-dev-19d863446a6b75b2f97b3012acf67c40b9f2ea1f.zip op-kernel-dev-19d863446a6b75b2f97b3012acf67c40b9f2ea1f.tar.gz |
ARM: imx: add an exclusive gate clock type
There are a couple of gate clocks are mutually exclusive on i.MX6, i.e.
LVDSCLK1_IBEN and LVDSCLK1_OBEN. They cannot be enabled simultaneously.
This patches adds an exclusive gate clock type specifically for such
case. The clock driver will need to call imx_clk_gate_exclusive() to
register a gate clock with parameter exclusive_mask indicating the mask
of gate bits which are mutually exclusive to this gate clock.
Right now, it only handles the exclusive gate clocks which are defined
in a single hardware register, which is the case we're running into
today. But it can be extended to handle exclusive gate clocks defined
in different registers later if needed.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx/clk.h')
-rw-r--r-- | arch/arm/mach-imx/clk.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/clk.h b/arch/arm/mach-imx/clk.h index d5ba76f..4cdf8b6 100644 --- a/arch/arm/mach-imx/clk.h +++ b/arch/arm/mach-imx/clk.h @@ -36,6 +36,9 @@ struct clk *clk_register_gate2(struct device *dev, const char *name, struct clk * imx_obtain_fixed_clock( const char *name, unsigned long rate); +struct clk *imx_clk_gate_exclusive(const char *name, const char *parent, + void __iomem *reg, u8 shift, u32 exclusive_mask); + static inline struct clk *imx_clk_gate2(const char *name, const char *parent, void __iomem *reg, u8 shift) { |